CN217135016U - Pressure relief protection assembly for high-voltage electric box of converter - Google Patents
Pressure relief protection assembly for high-voltage electric box of converter Download PDFInfo
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- CN217135016U CN217135016U CN202220692534.5U CN202220692534U CN217135016U CN 217135016 U CN217135016 U CN 217135016U CN 202220692534 U CN202220692534 U CN 202220692534U CN 217135016 U CN217135016 U CN 217135016U
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Abstract
The utility model discloses a pressure release protection subassembly for converter high voltage electric box, include: the bottom plate is suitable for being fixedly connected with the outer side wall of the high-voltage electric box of the converter; a pressure relief groove communicated with a pressure relief port prefabricated on the outer side wall of the high-voltage electric box of the converter is formed in the bottom plate; the pressure relief plate is suitable for abutting against the bottom plate from one side end of the bottom plate, which is far away from the outer side wall of the high-voltage electric box of the converter, so as to cover the pressure relief groove; and the pushing assembly comprises at least four elastic pushing pieces which are used for pushing the pressure relief plate from one side of the pressure relief plate, which is far away from the bottom plate, and are suitable for telescopic deformation. The utility model discloses can effectively improve the security that converter high voltage electric box used.
Description
Technical Field
The utility model relates to a converter technical field especially relates to a pressure release protection subassembly for converter high voltage electric box.
Background
When a converter high-voltage electric box (comprising a traction converter box, an auxiliary converter box, a high-voltage electrical appliance box, a main fuse box and the like) is used, due to the fact that a fastener for fixing a high-voltage component or a high-voltage wiring terminal is loosened, electrical gaps of the high-voltage component are reduced or the high-voltage component is directly grounded, discharging arc discharge or short circuit is caused, and the box body is further exploded due to high temperature generated during arc discharge or short circuit.
Because the closed part of the high-voltage electric box of the converter is an IP55 or IP54 protection grade closed box body, if no pressure relief device is arranged, the box body structure can be damaged by explosion, so that a box door or other parts can fly off to generate secondary disasters, and serious safety accidents are caused.
Although the existing converter high-voltage electric box is provided with a drainage device, the area of a drainage hole is small, the purpose is to discharge condensed water, the balance of air pressure inside and outside the box body is completed through slow exchange, and the requirements of quickly discharging high-temperature high-pressure gas generated in the moment of explosion and avoiding secondary disasters cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a pressure release protection subassembly for converter high voltage electric box to solve the technical problem who improves the security that converter high voltage electric box used.
The utility model discloses a pressure release protection subassembly for converter high voltage electric box is realized like this:
a pressure relief protection assembly for a converter high voltage electrical box, comprising:
the bottom plate is suitable for being fixedly connected with the outer side wall of the high-voltage electric box of the converter; a pressure relief groove communicated with a pressure relief port prefabricated on the outer side wall of the high-voltage electric box of the converter is formed in the bottom plate;
the pressure relief plate is suitable for abutting against the bottom plate from one side end of the bottom plate, which is far away from the outer side wall of the high-voltage electric box of the converter, so as to cover the pressure relief groove; and
the pushing assembly comprises at least four elastic pushing pieces which are used for pushing the pressure relief plate from one side of the pressure relief plate, which is far away from the bottom plate, and are suitable for telescopic deformation.
In an optional embodiment of the present invention, the pushing assembly further comprises at least four distance guide sleeves, which sequentially penetrate through at least four elastic pushing members and the pressure relief plate respectively; wherein
Any distance guide sleeve is fixed between the bottom plate and the shaft side end of the elastic top piece departing from the pressure relief plate through a fixing bolt penetrating through the distance guide sleeve.
In an alternative embodiment of the present invention, the elastic top member is a compression spring.
In an optional embodiment of the present invention, an annular sealing gasket is further interposed between the pressure relief plate and the bottom plate; and
the annular sealing gasket is provided with an opening communicated with the pressure relief groove.
In the optional embodiment of the present invention, a sealing gasket is further clamped between the bottom plate and the outer sidewall of the high voltage electrical box of the converter; and
an opening communicated with the pressure relief opening is preformed in the sealing gasket.
In an alternative embodiment of the present invention, a support washer is further disposed between the shaft side end of the elastic top member facing the pressure relief plate and the pressure relief plate.
In an optional embodiment of the present invention, a locking hole for fixedly mating with an outer sidewall of a high-voltage electrical box of a converter is disposed on the bottom plate; and
and a spacer is also arranged between the circumferential edge of the locking hole and the outer side wall of the high-voltage electric box of the converter.
In an optional embodiment of the present invention, the pressure relief protection assembly for the high-voltage electrical box of the converter further includes a protection cover covering the bottom plate, the pressure relief plate and the pushing assembly; and
the protective cover is fixedly assembled on the outer side wall of the high-voltage electric box of the converter;
an open mouth is prefabricated below the protective cover.
In an optional embodiment of the present invention, the pressure relief protection assembly for the high-voltage electrical box of the converter further includes a water spray prevention baffle plate, which is located in the protection cover and above the opening and is fixedly connected to the outer side wall of the high-voltage electrical box of the converter; and
and a channel suitable for high-temperature and high-pressure gas to flow is formed between the lateral side of the water spray prevention baffle and the opening.
In an optional embodiment of the present invention, the water spray prevention baffle includes a base plate fixedly connected to an outer sidewall of the high voltage electrical box of the converter, and an L-shaped extension plate bent and connected to the base plate; wherein
The L-shaped extension plate is positioned above the open mouth.
By adopting the technical scheme, the utility model discloses following beneficial effect has: the utility model discloses a pressure release protection subassembly for converter high-voltage electric box, pressure release board through setting up, when converter high-voltage electric box needs the high-temperature high-pressure gas that the explosion of quick discharge produced in the twinkling of an eye, pressure release board can produce the thrust to the elasticity ejecting under high-temperature high-pressure gas's effect, and make elasticity ejecting compression deformation, in this process, pressure release board can be to the side motion that deviates from the bottom plate, thereby form the passageway that is suitable for high-temperature high-pressure gas to discharge between pressure release board and bottom plate, make high-temperature high-pressure gas can discharge from converter high-voltage electric box fast, reach the purpose of quick pressure release, thereby improve the security that converter high-voltage electric box used. And after the pressure relief is finished, under the elastic reset acting force of the elastic top piece, the pressure relief plate can be automatically reset so as to facilitate the next pressure relief to be used again, and the whole structure is convenient and fast to use.
Drawings
Fig. 1 is a schematic view of the pressure relief protection assembly for the high-voltage electric box of the current transformer according to the present invention applied to the high-voltage electric box of the current transformer;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
fig. 3 is a schematic structural diagram of the pressure relief protection assembly for the high-voltage electrical box of the current transformer of the present invention;
FIG. 4 is a schematic cross-sectional view B-B of FIG. 3;
fig. 5 is a schematic view of a bottom plate of the pressure relief protection assembly for the high-voltage electrical box of the current transformer of the present invention;
fig. 6 is the utility model discloses a schematic diagram of a lateral wall of converter high voltage electric box that is used for pressure release protection subassembly of converter high voltage electric box to correspond.
In the figure: 1. a pressure relief protection component; 2. a protective cover; 3. a water spray prevention baffle; 5. the outer side wall of the high-voltage electric box of the converter; 1-1-1, a bottom plate; 1-2, a pressure relief plate; 1-3, fixing a bolt; 1-4, a check ring; 1-5, a fixed-distance guide sleeve; 1-6, an elastic top piece; 1-7, a support washer; 1-8, flat gasket; 1-9, an elastic washer; 1-10, nut; 1-1-2, sealing gasket; 1-1-3, a spacer; 1-2-2, an annular sealing gasket; 1-1-1-1, mounting holes; 1-1-1-2, a pressure relief groove; 1-1-1-3, a pressure relief plate mounting hole; 5-1, a protective cover mounting hole; 5-2, a pressure relief protection component mounting hole; 4. a seal member; 5-3, a pressure relief opening; 5-4, and mounting holes of the water spray prevention baffle plates.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.
Example 1:
referring to fig. 1 to 6, the present embodiment provides a voltage relief protection assembly for a high-voltage electrical box of a converter, including: a bottom plate 1-1-1, a pressure relief plate 1-2 and a pushing assembly which are matched for use.
Specifically, the bottom plate 1-1-1 is suitable for being fixedly connected with an outer side wall 5 of a high-voltage electric box of the converter; and a pressure relief groove 1-1-1-2 which is communicated with a pressure relief opening 5-3 prefabricated on the outer side wall 5 of the high-voltage electric box of the converter is formed in the bottom plate 1-1-1. A plurality of mounting holes 1-1-1-1 are prefabricated on the bottom plate 1-1-1 and used for mounting the bottom plate 1-1-1 on the outer side wall 5 of the high-voltage electric box of the converter. Correspondingly, an assembling hole 5-2 used for being matched with the mounting hole 1-1-1-1 is prefabricated on the outer side wall 5 of the high-voltage electric box of the converter.
And the pressure relief plate 1-2 is suitable for abutting against the bottom plate 1-1-1 from one side end of the bottom plate 1-1-1, which is far away from the outer side wall 5 of the high-voltage electric box of the converter, so as to cover the pressure relief groove 1-1-1-2. The pushing assembly comprises at least four elastic pushing pieces 1-6 which are used for pushing the pressure relief plate 1-2 from one side of the pressure relief plate 1-2, which is far away from the bottom plate 1-1-1 and are suitable for telescopic deformation. The bottom plate 1-1-1 is provided with a plurality of pressure relief plate mounting holes 1-1-1-3 for mounting the pressure relief plates 1-2.
Specifically, the pushing assembly adopted in the embodiment further comprises at least four distance guide sleeves 1-5 which respectively penetrate through the at least four elastic pushing pieces 1-6 and the pressure relief plate 1-2 in sequence; it should be noted that, for example, the pressure relief opening 5-3 and the pressure relief groove 1-1-1-2 are both rectangular or circular structures, then the circular or rectangular pressure relief plate 1-2 can be used to perform daily plugging on the pressure relief opening 5-3 and the pressure relief groove 1-1-1-2, for this reason, four elastic top members 1-6 and four distance guide sleeves 1-5 are used in cooperation, and in consideration of the balance of the plugging effect of the pressure relief plate 1-2 on the pressure relief groove 1-1-1-2, the connecting lines between the four elastic top members 1-6 and the four distance guide sleeves 1-5 can be selected to form a rectangular structure. On this basis, the elastic top part 1-6 and the distance guide sleeve 1-5 adopted in the present embodiment are preferably identical in structure.
In the following, the cooperation of the distance guide bushing 1-5 and the elastic top piece 1-6 in any configuration is described in detail:
the elastic top members 1-6 are exemplified by compression springs. The distance guide sleeve 1-5 is fixed between the bottom plate 1-1-1 and the axial end of the elastic top piece 1-6 departing from the pressure relief plate 1-2 through a fixing bolt 1-3 penetrating through the distance guide sleeve. Specifically, a check ring 1-4 is arranged between the fixing bolt 1-3 and the shaft side end of the elastic top piece 1-6 departing from the pressure relief plate 1-2 to effectively ensure the stable matching between the fixing bolt 1-3 and the elastic top piece 1-6. And after one end of the fixing bolt 1-3, which is far away from the elastic top piece 1-6, penetrates through the bottom plate 1-1-1, a nut 1-10 is sleeved, and an elastic washer 1-9 and a flat washer 1-8 which are positioned between the nut 1-10 and the bottom plate 1-1-1 are sleeved on the fixing bolt 1-3 to effectively ensure the stable matching between the fixing bolt 1-3 and the bottom plate 1-1-1.
In addition, it should be noted that, in consideration of the fact that the pressure relief plate 1-2 effectively ensures the sealing effect at the matching position of the pressure relief plate 1-1 and the bottom plate 1-1-1 under the condition of daily plugging of the pressure relief groove 1-1-1-2 of the bottom plate 1-1-1, an annular sealing gasket 1-2-2 is further interposed between the pressure relief plate 1-2 and the bottom plate 1-1-1; and the annular sealing gasket 1-2-2 is provided with an opening communicated with the pressure relief groove 1-1-1-2.
Furthermore, in consideration of the sealing effect of the matching structure formed between the bottom plate 1-1-1 and the pressure relief opening 5-3 of the outer side wall 5 of the high-voltage electric box of the converter, a sealing gasket 1-1-2 is clamped between the bottom plate 1-1-1 and the outer side wall 5 of the high-voltage electric box of the converter; and an opening communicated with the pressure relief opening 5-3 is prefabricated on the sealing washer 1-1-2.
On the basis of the structure, a bottom plate 1-1-1 is provided with a locking hole 1-1-1-1 which is fixedly connected with the outer side wall 5 of the high-voltage electric box of the converter in a matching way; and a spacer 1-1-3 is arranged between the circumferential edge of the locking hole 1-1-1-1 and the outer side wall 5 of the high-voltage electric box of the converter and is used for ensuring the uniform compression of the sealing washer 1-1-2 and the sealing performance.
In an alternative implementation, in order to enable the elastic top part 1-6 to be effectively matched with the pressure relief plate 1-2, a supporting gasket 1-7 is further arranged between the shaft side end of the elastic top part 1-6 facing the pressure relief plate 1-2 and the pressure relief plate 1-2.
In summary, for the pressure relief protection assembly for the high-voltage electric box of the current transformer of the embodiment, in a normal installation state, the fixing bolt 1-3 penetrates through the check ring 1-4, the distance guide sleeve 1-5 and the installation hole on the bottom plate 1-1-1, and the distance guide sleeve 1-5 is fixed between the check ring 1-4 and the bottom plate 1-1-1 by the flat washer 1-8, the elastic washer 1-9 and the nut 1-10. In the installation process, the distance guide sleeve 1-5 penetrates through the installation holes in the elastic top piece 1-6, the support gasket 1-7 and the pressure relief plate 1-2, and the elastic top piece 1-6 is installed between the retainer ring 1-4 and the support gasket 1-7. The pressure generated by the elastic top piece 1-6 acts on the pressure relief plate 1-2 through the supporting gasket 1-7, and the annular sealing gasket 1-2-2 on the pressure relief plate 1-2 is compressed, so that the sealing performance of the high-voltage electric box of the converter is ensured.
When the converter high-voltage electric box explodes, high-temperature high-pressure gas generated by explosion acts on the inner surface of the pressure relief plate 1-2 through the pressure relief port 5-3 arranged on the side wall of the box body and the pressure relief groove 1-1-1-2 arranged on the bottom plate 1-1-1, the generated pressure pushes the pressure relief plate 1-2 and the support gasket 1-7 to move outwards along the distance guide sleeve 1-5, and meanwhile, the elastic top part 1-6 contracts under the action of the pressure. Openings are formed between the pressure relief plate 1-2 and the bottom plate 1-1-1 in the upper, lower, left and right directions, and high-temperature and high-pressure gas is rapidly discharged through the openings. And then, the air pressure in the high-voltage electric box of the converter gradually decreases, and the pressure relief plate 1-2 moves towards the high-voltage electric box of the converter under the pressure action of the elastic top piece 1-6 until the normal installation state is recovered.
Example 2:
referring to fig. 1 to 6, on the basis of the pressure relief protection assembly for the high-voltage electrical box of the converter in embodiment 1, the pressure relief protection assembly for the high-voltage electrical box of the converter in this embodiment further includes a protection cover 2 covering a bottom plate 1-1-1, a pressure relief plate 1-2 and a pushing assembly; the protective cover 2 is fixedly assembled on the outer side wall 5 of the high-voltage electric box of the converter; an open opening is prepared below the protective cover 2.
In detail, the protective cover 2 is installed on an outer side wall 5 of a high-voltage electric box of the converter, and is of a completely closed structure in the left side, the right side and the upper direction, and is of a semi-closed structure in the lower direction, and a one-third opening is reserved. High-temperature and high-pressure gas exhausted from the high-voltage electric box of the converter can be exhausted downwards from an opening below the protective cover 2, so that the influence on electric components adjacent to the high-voltage electric box of the converter can be avoided as far as possible.
The safety cover 2 can prevent rainwater from directly splashing on the pressure relief protection assembly, prevent dust from falling on the pressure relief protection assembly, and is favorable for ensuring the protection function of the pressure relief protection assembly. In addition, the protective cover 2 can prevent foreign matters from falling onto the elastic top pieces 1-6, and the situation that the foreign matters clamp the elastic top pieces 1-6 to influence the normal function of the pressure relief protection component is avoided.
Example 3:
referring to fig. 1 to 6, on the basis of the pressure relief protection assembly for the high-voltage electrical box of the converter in embodiment 2, the pressure relief protection assembly for the high-voltage electrical box of the converter further includes a water spray prevention baffle 3, which is disposed in the protection cover 2 and located above the opening, and is fixedly connected to an outer side wall 5 of the high-voltage electrical box of the converter; and a channel suitable for high-temperature and high-pressure gas to flow is formed between the lateral side of the water spray prevention baffle plate 3 and the opening. Specifically, the outer side wall 5 of the high-voltage electric box of the converter is provided with a water-spraying-preventing baffle mounting hole 5-4 for matching with the water-spraying-preventing baffle 3.
Specifically, the water spray prevention baffle 3 comprises a base plate fixedly connected with the outer side wall 5 of the high-voltage electric box of the converter and an L-shaped extension plate connected with the base plate in a bending mode, so that the whole water spray prevention baffle 3 is of a U-shaped structure approximately; wherein the L-shaped extension plate is positioned above the open mouth. With this structure, rainwater splashed from the lower portion can be prevented from intruding into the pressure-relief protection assembly while maintaining the discharge passage of high-temperature and high-pressure gas.
It should be noted that, for the protection cover 2 and the water spray prevention baffle 3 of the present embodiment, in order to avoid the rainwater overflow at the mating position formed by the protection cover 2 and the outer sidewall 5 of the high voltage electric box of the converter, a sealing member 4 may be optionally arranged between the protection cover 2 and the water spray prevention baffle 3 and the outer sidewall 5 of the high voltage electric box of the converter to isolate the rainwater.
The above embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above embodiments are only examples of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Claims (10)
1. A pressure relief protection assembly for a converter high voltage electrical box, comprising:
the bottom plate is suitable for being fixedly connected with the outer side wall of the high-voltage electric box of the converter; a pressure relief groove communicated with a pressure relief port prefabricated on the outer side wall of the high-voltage electric box of the converter is formed in the bottom plate;
the pressure relief plate is suitable for abutting against the bottom plate from one side end of the bottom plate, which is far away from the outer side wall of the high-voltage electric box of the converter, so as to cover the pressure relief groove; and
the pushing assembly comprises at least four elastic pushing pieces which are used for pushing the pressure relief plate from one side of the pressure relief plate, which is far away from the bottom plate, and are suitable for telescopic deformation.
2. The pressure relief protection assembly for the high-voltage electrical box of the converter according to claim 1, wherein the jacking assembly further comprises at least four distance guide sleeves respectively penetrating through at least four elastic jacking members and the pressure relief plate in sequence; wherein
Any distance guide sleeve is fixed between the bottom plate and the shaft side end of the elastic top piece departing from the pressure relief plate through a fixing bolt penetrating through the distance guide sleeve.
3. The pressure relief protection assembly for the high voltage electrical box of the current transformer as claimed in claim 1 or 2, wherein the resilient top member is a compression spring.
4. The pressure relief protection assembly for the high-voltage electrical box of the converter according to claim 1, wherein an annular sealing gasket is further clamped between the pressure relief plate and the bottom plate; and
the annular sealing gasket is provided with an opening communicated with the pressure relief groove.
5. The pressure relief protection assembly for the high-voltage electrical box of the converter according to claim 1, wherein a sealing gasket is clamped between the bottom plate and the outer side wall of the high-voltage electrical box of the converter; and
an opening communicated with the pressure relief opening is preformed in the sealing gasket.
6. The pressure relief protection assembly for a high voltage electrical enclosure of a converter of claim 1, wherein a support washer is further disposed between the shaft side end of the resilient top member facing the pressure relief plate and the pressure relief plate.
7. The pressure relief protection assembly for the high-voltage electrical box of the converter according to claim 1, wherein the bottom plate is provided with a locking hole for fixedly matching with an outer side wall of the high-voltage electrical box of the converter; and
and a spacer is also arranged between the circumferential edge of the locking hole and the outer side wall of the high-voltage electric box of the converter.
8. The pressure relief protection assembly for the high voltage electrical box of the converter according to claim 1, further comprising a protective cover enclosing the base plate, the pressure relief plate and the pushing assembly; and
the protective cover is fixedly assembled on the outer side wall of the high-voltage electric box of the converter;
an open mouth is prefabricated below the protective cover.
9. The pressure relief protection assembly for the high-voltage electrical box of the converter according to claim 8, further comprising a water spray prevention baffle fixed to an outer sidewall of the high-voltage electrical box of the converter, the water spray prevention baffle being disposed in the protective cover and above the opening; and
and a channel suitable for high-temperature and high-pressure gas to flow is formed between the lateral side of the water spray prevention baffle and the opening.
10. The pressure relief protection assembly for the high-voltage electrical box of the converter according to claim 9, wherein the water spray prevention baffle comprises a base plate fixedly connected with the outer side wall of the high-voltage electrical box of the converter, and an L-shaped extension plate connected with the base plate in a bent manner; wherein
The L-shaped extension plate is positioned above the open mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220692534.5U CN217135016U (en) | 2022-03-29 | 2022-03-29 | Pressure relief protection assembly for high-voltage electric box of converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220692534.5U CN217135016U (en) | 2022-03-29 | 2022-03-29 | Pressure relief protection assembly for high-voltage electric box of converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217135016U true CN217135016U (en) | 2022-08-05 |
Family
ID=82644996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220692534.5U Active CN217135016U (en) | 2022-03-29 | 2022-03-29 | Pressure relief protection assembly for high-voltage electric box of converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217135016U (en) |
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2022
- 2022-03-29 CN CN202220692534.5U patent/CN217135016U/en active Active
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213000 No. 199, Fenglin South Road, Wujin national high tech Industrial Development Zone, Changzhou City, Jiangsu Province Patentee after: Jiangsu Xinyu Alstom Traction System Co.,Ltd. Address before: 213000 No. 199, Fenglin South Road, Wujin national high tech Industrial Development Zone, Changzhou City, Jiangsu Province Patentee before: BOMBARDIER NUG PROPULSION SYSTEM Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |